Centrifugal separator.



(I. J. BBRRIGAN.

OENTRIFUGAL SEPARATOR.

ENEWED SEPT. a, 1911. 1

11121110111011 r1121) v11111! 11, 1908. 11 1 ,062,2 1 5 Patented May 20, 1913 2 annmss1'mm 1.

Inventor:

Ati'ys J -J. BERRIGAN. UENTRITUGAL SEPARATOR. APPLICATION FILED MAY 11, 1908. RENEWED SE1 1,062,215.

Patented May 20, 1913.

2 SHEETS-SHEET 2.

of New Jersey,

onnron.

ASSIGNOR TOLFRANCIS J; AREND, OE'STOCKHQLM, SWEDEN. I

GENTRIFUGAL SEIEAIlR-A'JTCIRv Specification of Letters Patent,

Patent-edMay 20,1913.

Application filed May 11, 1908, Serial No. 432,224. Renewed September 8', 1911. Serial No. 648,403.

To all whom it may concern:

Be it known that I, JOHN J. BERRIGAN, a citizen of the United States, residing at East Orange, in the county of Essex and State have invented certain new and useful Improvements in Separators, of which. the following is a specification.

My invention relates toimprovements in centrifugal separators for separating liquldsand solids through the agency of. centrifugal force.

In my application. filed November 7th, 1905, Sr. No. 286,193, I have shown acen: comprising means. for conducting the separation in. successive stages, the mixture of solidand liquid material being carried up inclined'surfaces by suitable conveying means, theliquid flowing back down such surfaces My prcsentinvention comprises means for carrying a mixture up a surface whichis at right angles, or nearly at right angles, to

the axis of rotation. By so doing I obtain a more rapid separation, require a lessnumber of stages in the apparatus, and make the apparatus much more compact.

The objects of my, inventionare, to improve and simplify centrifugal separators of the class referred to, and to make them more compact and ctlicient.

I will now proceed to describe my invcn-- tion with reference to the accompanying drawings.

In said drawings;Figure 1 shows a central vertical section ,of'a horizontal type of:

separator einl'iodyingmy invention; Fig. 2 shows a transverse section of the separator and shows particularly the spiral elevator employed; Fig. 3,.shows a central vertical section of a vertical type of separator embodying the same principle of operation.

Referring first to Figs. 1 and2, 1 designates a substantially within which are the working parts of the machine; on the head 2 of said cylinder is a hollow trunnionreceivedin abearing in On the opposite. head 4- of said cylinder is a hollow trunnion 5 which is reccivedin a bearing in a fixed standard (3. Standards 3 and 6- the bed 7 of the machine. The driving pul-. ley 8 for the cylinder 1 is mounted-upon the first of said trunnions 9. Power is communicated to said pulley by a suitable belt a fixed standard Cen tri fugal communicating as it. separates.v

horizontal cylinder rest 11 pon (not. shown) and in that way cylinder 1 is caused to rotate.

designates.- a feed hopper supported on bracketill, extending-from standard 6; The

- within the hollowtrunnion= 5 and arranged to be driven by a drivingwheel13 said hol low trunnion having an inclined" duct 14 with; the interior of cylind8! 1; V

VVithinthe drum l"is a conveyer shaft 14 having bearings intrunnion 9 and having its innerend steppedin a bearing; 15' in truenion This be driven by means ofia At the right hand or driving. wheel 16. receiving end." of the drum, this shaft carries conveyer blades: 17

arranged mfeed, the mixture of'solid-and 'liquidimaterial which, in the operation of the machine, forms-anannulus against the inner, periphery; ofid'rum -l. to the left. Beyond these conveyer blades 17 *t-hereare one. or morepartitions 18, therighthand or re-:

conveyor shaft is arranged to ceiving. surfaces ofwhichiare nearly or quite at. right anglestothe axis in these. partitionsarecentral openings 19 throughwhich the shaft 14; passes, but which are considerably larger; than said shaft. Adjacent-to these partitions-18, onthe right hand or receivingside thereof; are .disksQO mounted on. shaft and each carrying a-sprrah elevator blade 21 (see particularly Fig.2), the-surfac'we'of' which blade isslightly inclined, with respectto the axis ol rotat-ion. The disks-20 of rotation and j 14; to be rotated/thereby eatend nearly to, but not quite to, the-periphery of the drum '1 vand each such disk'is provided opposite the point offcommencement or outer extremity ofth'c corresponding. spiral blade 21, with a turned-lip 22 (formed fconveniently by cutting the disk along line-23, Fig. 2,'and bend- 111g backward at a. slightanglethe-lip so formed). The edges of, the convey'er. blades 21. arein practice quite close to :the surfaces rearwardly ofthepartitions' 18; in Fig. 1 the distance betweenthe edges-of the-blades "and the. said I partitions; is. exaggerated for'purposes of" illustration, as otherwise would -be difli cult'to indi'cate that-there is in faet aslight space between saidbladesiand partitions. A: conveyor; blade formed ias, is blade 21 Will,

when rotated relatively to the: drum, raise. a

mixture of liquid and solid material toward the axis of rotation, the liquid draining off as the mixture is raised and flowing back through the narrow space between the edge of the blade and the surface of the adjacent partition; and when the solid material. with more or less liquid still remaining in it, has reached the level of theedge of orifice 19, such solid material will flow off the face of the blade, under the influence of centrifugal force, and, passing through orifice 19, will fall to the periphery of the drum again. In Fig. 1 I lItLVG SlIOWII two partitions 18 and two corresponding spiral elevators 21, but there may be more or less of these partitions and elevators, corresponding to a greater or less number of stages of separation, as preferred and as the characteristics of the particular material treated may render desirable. Where there is more than one such partition 18 I provide between such artitions, conveyer blades 171, correspondlng to blades 17, and like them, arranged to be rotated by shaft 14.

In the machine shown, there is, first of all, an initial separation of the mixture supplied, into concent-ricannuli of liquid and solid material, in the space through which the blades 17 travel; the solid annulus in '18, the greater part of the this region still containing considerable liquid, however. In the passage of the material from this solid annulus upward to ward the opening 19 of the first partition liquid remaining drains off and flows back, joining the liquid in the annulus at the receiving end of the machine. In the chamber between the two partitions 18 this material forms another annulus in which some further separation occurs; and in the passage of material from such annulus toward the opening 19 of the second partition a by which practically all of the remaining liquid will, in most cases, be separated out and caused to flow back; the remaining solid material passing through the opening 19 of such second partition into the chamber 24 at the delivery end of the machine. The solid material may be conveyed from the outside ofsuch'delivery chamber 24 to the discharge duct 25 by any suitable means. I have indicated for the purpose, a conical partition 26 With conveyer blades 27 movable thereover and arranged to be rotated by shaft 14 and other blades 172 for feeding the solid material from the annulus in chamber 24 up such inclined surface 26. Any moisture remaining in the material when it reaches this chamber 24 will, in general, be separated out during the passage of the material up surface 26. e

For the escape of liquid at the receiving end of the drum, I provide, in head 4, a discharge orifice 28, the position of which with respect to the inner surface of drum 1,

further separation occurs,

regulates the depth of the liquid annulus in this portion of the apparatus. In the chamber between the partitions 18 I provide another discharge port 29; and the first partition 18 is provided with a lip 181 which throwsthe solid material beyond this port 29,50 that the solid material does not escape therethrough. I may also provide a similar discharge port 29 for chamber 24:. The dis charge from port 28 is received in an annulardelivery chamber 31; and the discharge from ports 29 is received in corresponding annular delivery chambers 32. The solid material escaping through the duct 25 is received within an annular delivery chamber 33.

The operation of this apparatus is as follows: Drum 1 being in rotation, and conveyer shaft 14 rotating with respect to said drum (the actual speed of rotation of shaft 14 being usually somewhat less than that of drum 1, so that there 'is relative rotation of the shaft with respect to said drum) and a mixture of. solid and liquid materialbeing fed from hopper 10 through hollow trunuion 5 and duct 141 into drum 1 by the conveyer 12, this material forms an annulus against the wall of the drum, in the space through which the conveyor blades 17 travel. These blades feed the material of this annulus to the left until such material is picked up by the lip 22 and moved to the left into position to be lifted by the first of the spiral elevators 21. Such elevator blade then conveys the material upward to the opening 19 of the first partition 18, the greater part of the liquid draining off during such movement, as previously explained, the remaining solid material being caused to pass through opening 19 into the chamber between partitions 18. In this chamber the operations are repeated, the practically dry solid material being delivered through the opening 19 of the second partition-into chamber 24 and being carried up along inclined surface 26 in .said chamber to the ducts 25) and thence outward. The liquid draining back in these successive separation operations escapes through ports 28 and 29.

My invention is not restricted to horizontal machines; and in general it is, in principlc, substantially immaterial whether machines such as these be arranged vertically or horizontally, though certain mechanical conditions limit the height and permissible diameter of vertical machines, so that in general, for machines of large capacity, the horizontal arrangement is preferable. In Fig. 3, I show one form of vertical machine having my invention applied thereto, the same comprising a bowl 34 corresponding to drum 1, and arranged to be rotated by a shaft 35. \Vithin said bowl there is a single substantially fiat partition 36, corresponding to partition 18, and a. conical partition 37,

correspondin substantially to partition 26, and there are conveyor blades 17 and 27 and a spiral elevator blade 21, substantially the same as in the device shown in Fig. 1. The

lit uid is received in )an 38 surrtnmdi n the bowl, and the solid material is delivered through a duct 39 into a space 40 and thence passes out through an opening all.

hat I claim is:- i

1. A centrifugal. separator comprising in con'ibination a rotatable drum provided with one or more transverse orificed partitions therein and means for conveying material from near the periphery of such drum along such partition or partitions to the orifices thereof, comprising a rotatable continuous spiral blade. I I

2.-A centrifugal se arator comprising in combination a rotatable drum provided with, one or more transverse orificed partitions therein and means for conveying material from near the periphery of such drum along such partition or partitions to the orifices thereof comprising a rotatable continuous spiral blade, the edge of which is in a plane perpendicular With respect to the axis of rotation.

3..A centrifugal separator comprising in- .',ombination a rotatable drum provided with one or more transverse orificed partitions therein and means for conveying material from near the periphery of such drum along such partition or partitions to the orifices thereof eomprising a rotatable continuous spiral blade, the edge ,of ivhich is in a plane perpendicular with respect to the axis of" rotation, said blade located in imity to the said partition.

4. A centrifugal separator comprising in combination a rotatable drum providedwith one or more orificed' partitions, one or more corresponding disks located in proximity to such partitions and provided with a spiral elevator blade in thespace between suchdisk and correspondingpartition.

A centrifugal separator comprising in c( n'ibim ition a rotatal' ledrum provided with one or more orificed partitions, one or more corresponding dislis located in proximity to such partitions and providedWith a spiral elevator blade in the space between such disl; and corresponding partitiomsaid diskvlmving a lip adapted to feed material into the range of action of said elevator blade.

(3. ii centrifugal. separator comprising in combination a rotatable drum provided with one or more transverse orificed partitions there n and meansfor conveying material from near the periphery of such drum along such partition or partitions to the orifices thereof. comprising a rotatable continuous spiral blade'and means for feeding. material into the range of action of such blade.

7. A centrifugal separator con'iprising in combination a rotatable drum close proxone or more orificed partitions and with means for feeding in the mixture to be separated, ele 'ating 1n ans operating in proxinr ity to each such partition comprising a continuous spiral rotatable elevator blade, rotatable conveyers for feeding the material into the range-of action of said elevating means, and means for rotating said elevating means and conveyers with respect to the drum. I

8. A centrifugal se 'iarator' comprising in combination a rotatable drum provided with one ormore orificed 'iartitionsal id with means for feeding in the mixture-to be separated, elevating -means operating in proxi;m-. ity to each. such partition comprising'a continuous spiral rotatable el tatable con-veyers for feet 111g the material into the range of action of said elevating means, and a shaft rotatable with respect to said drum and arranged to rotate said elevating means and conveyers.

9. A centrifugal separator comprising a rotatable drum provided with one or more orificed partitions and with meansfor feed,- ing into said drum at one end material; tobe separated, elevating proximity to said partitions andfco nprising a continuous spiral rotatable elevator blade a conveyer in the space between the point 0 delivery of the material and suchelevating means, a discharge duct, aninclined surfaee between such discharge duct; andpartitions, conveying means for feeding material up such inclined surface to suchjdischa-rge duct and means for rotating said conveyors an elevating means.

10. A centrifugalseparator rotatable drum provided orificed partitions and with ll'lQiiIlS'fOI' feeding into said drum at oneend material to be separated, elevating proximity to said partitions and comprising crate bla e, 7

means operating in comprising a w th one ormore a continuous spiral rotatableelevator blade a conveyer in the space between the. point 0 delivery of the nniterialaml such elevatingmeans, a discharge duct, an inclined surface between such discharge duct and partitions, conveying means for feeding material up such inclined surface, to such discharge duct, and a shaft rotatable with respectto said drum and carryingsaid conveyers, and elevating means.

11. A centrifugal separatorcomprising in combination a rotatablo'druln provided with a centrally orificed partitionarrangedSubstantially at right angles to the aaisof rotation, and conveying means an aged. 1 Corr vcy material along said partition,.fro rrnear the periphery of the drum to the orifice of said partitio 12, A centrifugal separator comprising in combination a rotatable drum provided With an orificcd partition arranged sul'istantlally provided with 1 at right angles to the axis of rotation, and

ioa

means operating in riphery of the drum to a spiral conveyer arranged to convey material along said partition from near the pcthe orifice of said partition.

.13. A centrifugal separator comprising in combination a rotatable drum provided with a centrally orificed partition arranged substantially at right angles to theaxis of rotation, a rotatable disk arranged in proximity to said partition, and conveying means on said disk arranged to convey material along said partition from near the periphery of the drum to the orifice of said partition.

14. A centrifugal separator comprising in combination a rotatable drum provided with an orificed partition arranged substantially at right angles to the axis of rotation, and rotatable spiral conveyer arranged to convey material along said partition from near the periphery of the drum to the orifice of said partition, the conveying surface of said conveyer inclined somewhat with respect to the axis of rotation.

In testimony whereof I aflix my signature, in the presence of two witnesses.

JOHN J. BERRIGAN.

\Vitnesses H. M. MARBLE, FRANK E. RAFFMAN. 

